What is 3 ethyl 3, 4 dimethylheptane abbreviated structural formula?

In which situation can a mixture always be called a solution

Give the orbital configuration of the phosphorus (p) atom.

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.